Features of planning training loads of coordinating orientation in young female volleyball players aged 10-17, taking into account their age development

Background and Study Aim. In the context of youth sports development, it is imperative to emphasize the critical importance of a comprehensive understanding of coordinating orientation training in young female volleyball players. Given the significant variations in physical and neurological growth patterns within this age group, addressing the methodological nuances of tailored training programs becomes paramount. This study aims to substantiate specific methodological approaches for planning coordination training among young female volleyball players, with a keen focus on accommodating the unique intricacies of their developmental journey. Material and Methods. Participants in this study included female volleyball players aged 10 (n=25), 11 (n=20), 12 (n=30), and 13 (n=20). The second phase of the study involved the analysis of four years of observations of female volleyball players aged 14 to 17 (n=24), who were carefully selected from a large pool of young candidates. Prior to their participation, both the children and their parents were provided with detailed information about the study, and informed consent was obtained. In the study, a series of tests were utilized, including “Backward Throw to Target”, “Stepping over a gymnastics stick”, “'Running to numbered balls”, and “Backward Shuttle Run (3x10 m)”. An expert assessment was conducted, involving the participation of highly qualified specialists (n=25). Results. The study has demonstrated a substantial increase in coordination abilities among female volleyball players aged 10 to 17. A significant improvement was observed in kinesthetic differentiation abilities (2.3 times). A somewhat smaller increase was noted in their abilities to coordinate and restructure movements and spatial orientation (1.4-1.6 times). The most pronounced and statistically significant improvements were observed in the age group of 10 to 12 years. Changes in volleyball players aged from 12 to 13 and from 13 to 14 in tests assessing the development of spatial orientation and coordination of movements were less apparent. Motor coordination indicators improved significantly in the age group of 14 to 16. Conclusions. The identification of age-related characteristics in the development of coordination abilities is crucial for implementing the principle of aligning biological development with pedagogical and training methods. Understanding the various ontogenetic stages is essential for effectively managing the long-term athletic development of young female volleyball players

Characteristics of COVID-19 in pediatric patients with hematological malignancies

Introduction: As more data is collected, hematologists will be able to gain more insight into the impact of coronavirus disease 2019 (COVID-19) on pediatric patients with hematological malignancies. Material and methods: We analysed 21 cases of COVID-19 in pediatric patients with onco-hematological diseases treated in the Western Ukrainian Pediatric Medical Center from March 2020 through May 2021. The majority of patients (71.4%) were diagnosed with acute lymphoblastic leukemia. All patients from the analyzed cohort had an asymptomatic, mild or moderate course of coronavirus-19 infection. The most common symptoms of COVID-19 were fever, cough, gastrointestinal symptoms, and dermatitis. Severe severe acute respiratory syndrome coronavirus 2 increased the risk of liver toxicity and venous thrombosis. Results and conclusion: Our analysis showed that pediatric patients with hematological malignancies need the same treatment approach for COVID-19 as for other infective complications